Exercise 6
Exercise 6
Different types of Syntax errors
Recreate at least three of the errors in your past programs from "onlinegdb" and explain how you solve them. This must be copied and pasted in your assignment sheet,
Items in this lesson
Exercise 6
Different types of Syntax errors
Recreate at least three of the errors in your past programs from "onlinegdb" and explain how you solve them. This must be copied and pasted in your assignment sheet,
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Syntax Error Explained
In Python programming, a Syntax Error occurs when the interpreter encounters a line of code that violates the predefined "grammar" rules of the language. Because Python must parse your code into an understandable format before running it, a syntax error will prevent your entire script from starting.
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Typical message: SyntaxError: EOL while scanning string literal OR SyntaxError: unexpected EOF while parsing
Fix: close the string and the parentheses
python Copy code
print("Hello")
Explanation: The code contains characters or token order that Python cannot interpret in the given context (often due to a typo or misplaced punctuation).
Example:
if True
print("Yes")
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Unmatched closing bracket
Explanation: A closing bracket/parenthesis/brace appears without a corresponding opening one (or a mismatch).e text
lst = [1, 2, 3)]
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Explanation: An opening bracket/parenthesis/brace is never closed by the end of the file.
Example:
def f(x):
return (x * 2
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Explanation: A keyword is used in a place where a valid token is expected, often due to stray text or wrong indentation.
python Copy code
def if(x):
return xSlide heading
Typical message: IndentationError: expected an indented block
python Copy code
def f():
print("Hi")Slide heading
Explanation: A function or class header ends without the required colon.
Example:
python Copy code
def f(x)
return x
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Explanation: The code contains characters that aren’t allowed in identifiers (e.g., spaces or non-ASCII letters in a way that isn’t valid in the current encoding).
Example:
na me = "Alice"
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Logical Error
A logical error is a programming mistake where code runs without crashing but produces incorrect, unintended, or unexpected results. Unlike syntax errors, the program is valid, but its logic or structure is flawed. It is commonly called a "bug," "design error," or "semantic error" (in certain contexts).
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#. Take a single mark input from the user
mark = int(input("Please enter the test mark: "))
# 2. Use the three selection commands to interpret the grade
if mark <80:
print("Grade: A")
elif mark >= 65:
print("Grade: B")
elif mark >= 50 and mark <= 64:
print("Grade: C")
else:
print("Grade: D") 1
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Example
if marks <80:
print ("print Grade A")
else:
prinnt ("Grade D")
Here 85 was inputted and Grade D was printed instead of Grade AI
I changed - if marks>80: instead and the code worked
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THE END
